April 29, 2004

Design of Profile Wall Thermoplastic Pipe for Compression Forces

By: McGrath, Timothy J.

Abstract: Gravity flow thermoplastic pipes use profile wall geometries to provide maximum wall stiffness with minimum wall area. This practice minimizes the material used in manufacture, and thus the product cost. In the case of some...

March 30, 2004

Design of steel structures for blast-related progressive collapse resistance

By: Ronald Hamburger, Whittaker, Andrew

Abstract: Structural design of steel structures in buildings to resist the effects of potential blasts is discussed. Steel building systems are found to be ideal due to the toughness of structural steel as a material and the relative ease of...

March 30, 2004

Effects of Reference Displacement and Damage Accumulation in Wood Shear Walls

By: Jeff Langlois, Gupta R., Miller T.

Abstract: The objectives of this study were: (1) to evaluate the effect of reference displacement on wall behavior under fully reversed cyclic loading using the Consortium of Universities for Research in Earthquake Engineering (CUREE) test...

February 27, 2004

Two-Dimensional Analysis of Thermoplastic Culvert Deformations and Strains

By: Dhar A.S., Moore I.D., Timothy J. McGrath

Abstract: Tests have been performed in a biaxial pipe test cell to develop baseline information on profiled pipe behavior under biaxial loading. These include a lined corrugated high-density polyethylene pipe and a helically wound ribbed...

January 30, 2004

Thrust Restraint Design of Concrete Pressure Pipe

Abstract: A finite-element model of a buried pipeline consisting of concrete pressure pipe segments and joints is developed for analysis of longitudinal effects resulting from pressure-induced thrust at a bend. The model accounts for longitudinal...

January 30, 2004

Rising to the Challenge: Roofing Rehabilitation of the New York State Capitol

By: Niklas Vigener, James Jamieson

Abstract: Consider a list of single conditions that can make any roofing project significantly more challenging:|- Complex roof geometries and conditions|- A plethora of different roofing materials|- Extremely steep roof slopes|- Difficult access...

December 31, 2003

Analysis and performance of PCCP Mortar Coating

By: Mauro Scali, Paul Scheiner, Rasko Ojdrovic, Mehdi Zarghamee, Aquino W.

Abstract: The evaluation of cement mortar coatings on prestressed concrete cylinder pipes (PCCP) may include such techniques as petrographic examination, material testing, and environmental testing of soil and groundwater. Petrographic analysis...

June 1, 2001

Under the Microscope

Abstract: Forensic engineering is typically more complex than engineering design because it requires the integration of specialized knowledge of materials science, structural analysis and design, and construction...

December 31, 2000

Do Pan Floats Cause Blisters or Delaminations?

By: Mauro Scali, Suprenant, B

Abstract: Pan floating significantly increases floor flatness and improves finishing productivity, but can it also cause floor imperfections? Section 11.7 of ACI 302.1R-96, "Guide for Concrete Floor and Slab...

December 13, 1998

Specifying Air Entrainment

By: Michael Brainerd, Mauro Scali, Paul Kelley

Abstract: Air entrainment can prevent cyclic freeze-thaw damage to concrete over a reasonable service life if coupled with a strong cement paste with low permeability. This article discusses how to correctly specify air entrainment, including...